Plato, Laws 736a

ἕπεσθαι, τούτοις ὡς νοσήματι πόλεως ἐμπεφυκότι, διʼ εὐφημίας ἀπαλλαγήν, ὄνομα ἀποικίαν τιθέμενος, εὐμενῶς ὅτι μάλιστα ἐξεπέμψατο. παντὶ μὲν οὖν νομοθετοῦντι τοῦτο ἁμῶς γέ πως κατʼ ἀρχὰς δραστέον, ἡμῖν μὴν ἔτι τούτων ἀκοπώτερα τὰ περὶ ταῦτʼ ἐστὶ συμβεβηκότα νῦν· οὔτε γὰρ ἀποικίαν οὔτʼ ἐκλογήν τινα καθάρσεως δεῖ μηχανᾶσθαι πρὸς τὸ παρόν, οἷον δέ τινων συρρεόντων ἐκ πολλῶν τὰ μὲν πηγῶν

to follow their leaders in an attack on the property of the wealthy,—then the lawgiver, regarding all such as a plague inherent in the body politic, ships them abroad as gently as possible, giving the euphemistic title of emigration to their evacuation. By some means or other this must be done by every legislator at the beginning, but in our case the task is now even more simple; for we have no need to contrive for the present either a form of emigration or any other purgative selection; but just as